This is for the Marvel 60 router, Model #ML3HP ONLY
On each side near the top is a plug for the motor brushes, unscrew these plugs and remove the brushes by pulling straight out.
Unlock the depth rod and raise the rod up till it is even with the top of the router housing.
Remove the screw in the center of the micro adjustment knob and remove the knob.
Remove two screws from the handle with the on off switch in it.(you might be able to just loosen them but I removed them all the way)
Turn the router over and near the collet will be four screws. Remove these screws with care because the housing will start to seperate.
As the housing comes apart the handle will also come out. It may pop out so go slow and look to see how it goes back in before removing all the way.
Once apart you can do what you want with the springs.
Reverse the procedure to put it back together. The hardest part is holding the on off switch handle in place while putting the housing back down.
It is really not that hard just time consuming the first time.
Hope this helps